Project Details
Projekt
Integral coupled simulation of fluid dynamics of the metal cutting fluid and the cutting process in vibrationn assisted drilling - ViBohr
Subject Area
Metal-Cutting and Abrasive Manufacturing Engineering
Mechanical Process Engineering
Mechanical Process Engineering
Term
since 2020
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 439950037
The objective of the ViBohr sub-project within the Priority Programme (SPP) 2231 FluSimPro is to achieve process efficiency and optimisation by means of an integral, coupled ViBohr process simulation model. Base of the modelling is a fundamental understanding of the effect of the Minimum Quantitity Lubrication (MQL) flow and the wetting behaviour on the chip formation and chip transport mechanisms as well as the associated heat transport during vibration-assisted drilling. In accordance with the structure of the SPP over its entire duration, the focal points of the present sub-project in the course of the SPP are: - Phase 1: Model development and validation of the various process stages (model modules). - Phase 2: Model coupling and integral simulation - Phase 3: System and process optimisation of vibration-assisted drilling. The objective of the proposed project in the third phase of the SPP is to use the integrally coupled ViBohr simulation model to analyse the metal working fluid (MWF) transport into the chip formation zone and the effects of the MQL on chip formation, chip transport and the thermal and mechanical loads on the tool. Based on these findings, recommendations are to be derived for optimised tool geometries and process control for vibration-assisted drilling and an exemplary realization of corresponding tools and processes. Furthermore, the integrally coupled ViBohr simulation model is to be further improved by methods for reducing computing time, such as adaptive mesh refinement, and improved coupling (e.g. two-way coupling of CFD/DEM) of the sub-models.
DFG Programme
Priority Programmes
